Studies in Population Physiology. VII. The Relation of Environmental Conditioning to the Decline of Tribolium confusum Populations

1937 ◽  
Vol 10 (2) ◽  
pp. 197-211 ◽  
Author(s):  
Thomas Park ◽  
Nancy Woollcott
Keyword(s):  
Tribolium Confusum ◽  
Environmental Conditioning

The Effect of Neutron Irradiation on the Fertility of Tribolium confusum

1961 ◽  
Vol 95 (881) ◽  
pp. 124-126
Author(s):  
Daniel J. McDonald ◽  
Howard C. Long
Keyword(s):  
Neutron Irradiation ◽  
Tribolium Confusum

scholarly journals Behavioral and Antennal Responses of Tribolium confusum to Varronia globosa Essential Oil and Its Main Constituents: Perspective for Their Use as Repellent

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4393
Author(s):  
Cesar Auguste Badji ◽  
Jean Dorland ◽  
Lynda Kheloul ◽  
Dimitri Bréard ◽  
Pascal Richomme ◽  
...  
Keyword(s):  
Essential Oil ◽  
Tribolium Confusum ◽  
High Dose ◽  
Synthetic Chemicals ◽  
Stored Product Pest ◽  
Indigenous Plant ◽  
Main Components ◽  
Electroantennogram Recordings ◽  
The Individual ◽  
Main Component

Essential oils of aromatic plants represent an alternative to classical pest control with synthetic chemicals. They are especially promising for the alternative control of stored product pest insects. Here, we tested behavioral and electrophysiological responses of the stored product pest Tribolium confusum, to the essential oil of a Brazilian indigenous plant, Varronia globosa, collected in the Caatinga ecosystem. We analyzed the essential oil by GC-MS, tested the effects of the entire oil and its major components on the behavior of individual beetles in a four-way olfactometer, and investigated responses to these stimuli in electroantennogram recordings (EAG). We could identify 25 constituents in the essential oil of V. globosa, with anethole, caryophyllene and spathulenole as main components. The oil and its main component anethole had repellent effects already at low doses, whereas caryophyllene had only a repellent effect at a high dose. In addition, the essential oil abolished the attractive effect of the T. confusum aggregation pheromone. EAG recordings revealed dose-dependent responses to the individual components and increasing responses to the blend and even more to the entire oil. Our study reveals the potential of anethole and the essential oil of V. globosa in the management of stored product pests.

Beyond average: an experimental test of temperature variability on the population dynamics of Tribolium confusum

2010 ◽  
Vol 53 (1) ◽  
pp. 53-58 ◽  
Author(s):  
Sergio A. Estay ◽  
Sabrina Clavijo-Baquet ◽  
Mauricio Lima ◽  
Francisco Bozinovic
Keyword(s):  
Population Dynamics ◽  
Experimental Test ◽  
Temperature Variability ◽  
Tribolium Confusum

scholarly journals Experimental characterization of tensile strength of steel and fibre rovings also under environmental conditioning

2021 ◽  
pp. 108895
Author(s):  
Giuseppe Maddaloni ◽  
Eliana Parcesepe ◽  
Annalisa Franco ◽  
Antonio Bonati ◽  
Antonio Occhiuzzi ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Experimental Characterization ◽  
Environmental Conditioning

The Utilisation of metabolic Water in Insects

1944 ◽  
Vol 35 (2) ◽  
pp. 127-139 ◽  
Author(s):  
G. Fraenkel ◽  
M. Blewett
Keyword(s):  
Body Weight ◽  
Water Content ◽  
Larval Development ◽  
Dry Weight ◽  
Larval Period ◽  
Tribolium Confusum ◽  
Ephestia Kuehniella ◽  
Final Size ◽  
Metabolic Water ◽  
Food Consumed

(1) Three insects,Tribolium confusum, Ephestia kuehniellaandDermestes vulpinus, have been grown at several humidities and the following factors have been determined: length of larval period; water content of food and of the freshly formed pupae; wet and dry weight of pupae and wet and dry weight of food consumed during larval development. The “net utilisation” of the food has been calculated as the ratio of dry weight of food eaten per larva to dry weight of pupa.(2) At lower humidities more food is eaten to produce a given unit of body weight. The length of the larval period increases and the weight of the pupae decreases.(3) More food is eaten at low humidities, because part of the food is utilised as water. As a consequence of this, the larva grows more slowly and its final size is smaller. It is shown forDermestesat 30 per cent. andEphestiaat 1 per cent. R.H. that less than 32·9 and 7·6 per cent. of the water in the pupae can be derived from water ingested with the food.

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